SMC 11-CDQSXB25-5D | Clean Room Low Speed Cylinder CQSX Series 25mm Bore 5mm Stroke Double-Acting Anti-Stick-Slip Ultra-Short Stroke

The SMC 11-CDQSXB25-5D is a clean room specification low speed cylinder from the CQSX series with an ultra-short 5mm stroke. Part number decoded: CDQSX = CQSX series double acting guided low speed, B = both ends tapped, 25 = 25mm bore, 5 = 5mm stroke, D = option. The 25mm bore with only 5mm travel creates the highest force-to-stroke ratio in the CQSX compact low-speed range, delivering approximately 29N at 0.6 MPa over a distance shorter than most piston rod diameters.

A 5mm stroke is the minimum available in the CQSX series, designed for applications requiring the smoothest possible micro-motion with substantial force. Typical uses include precision pressing of bonded components (where controlled force must be applied across a tiny gap), fine-height adjustment of inspection fixtures, gentle contact for surface quality testing, and micro-insertion of press-fit components where the insertion distance is only a few millimeters. The CQSX anti-stick-slip mechanism ensures the piston begins moving smoothly without the initial lurch that could damage delicate workpieces.

The CDQSXB25-5D is the shortest-stroke, largest-bore CQSX compact cylinder available. For longer strokes at 25mm bore, the CQSX offers options up to 50mm. For even higher force in ultra-short stroke, the CDQSXB32 at 5mm stroke provides 32mm bore output. For standard-speed operation at 5mm stroke, the CDQSB25-5D removes the low-speed mechanism. For lower force in the same stroke range, smaller bores (12mm, 16mm, 20mm) are available. Clean series (11-) fluorine grease. RoHS compliant.